In this study, the effects of the battery position, its mass and cross-section on the static and dynamic properties of the vehicle structure were investigated using response surface methodology. The assumption that the structure of conversion design electric vehicle is over-dimensioned, in particular, for global static and dynamic requirements was confirmed in this study. The highest influence of the battery is on local properties of the vehicle floor, local bending and natural frequency. The cross-section of the battery and its interaction with the mass are shown to have a high influence on the first natural frequency of the vehicle floor. This means that while designing Conversion-Design electric vehicles, particular attention has to be given to the local stiffness while the global structure should be weakened so that global stiffness requirements are only fulfilled in combination with the battery system. The influence of the battery on the crash behaviour of the vehicle was not investigated in this particular case study, although, it is of great importance in relation to the vehicle design. In order to find an optimal behaviour of the vehicle structure a trade-off between the static and dynamic behaviour of the vehicle on one hand, and the crash behaviour of the vehicle on the other hand has to be made. For this purpose this investigation can be extended on crash behaviour and an optimisation problem with constraint on intrusion and vehicle package dimensions can be formulated.
Influence of the battery system on the dynamic and static properties of battery electric vehicle floor structure
2012
13 Seiten, 7 Bilder, 3 Tabellen, 13 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch